This is a prospective, multicenter, observational clinical study conducted under routine clinical practice conditions aimed at describing adherence to a creatine-based nutritional supplement (Creaticare FEM) in estrogen-depleted adult women. Participants will receive the supplement for 12 weeks, and adherence will be assessed as the percentage of doses consumed and the proportion of participants achieving ≥80% adherence. Secondary outcomes include persistence, satisfaction, tolerability, and adherence to recommended physical activity. Exploratory outcomes include changes in muscle strength, body composition, quality of life, joint pain, and skin health.